CN105849549A - Ultrasonic flaw detection apparatus and method for detecting flaw of steel plate - Google Patents

Ultrasonic flaw detection apparatus and method for detecting flaw of steel plate Download PDF

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Publication number
CN105849549A
CN105849549A CN201380081826.9A CN201380081826A CN105849549A CN 105849549 A CN105849549 A CN 105849549A CN 201380081826 A CN201380081826 A CN 201380081826A CN 105849549 A CN105849549 A CN 105849549A
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China
Prior art keywords
medium
dielectric
injection nozzle
steel plate
pipe
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Granted
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CN201380081826.9A
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Chinese (zh)
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CN105849549B (en
Inventor
林忠洙
千明植
许亨晙
孙鹏镐
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Posco Holdings Inc
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Posco Co Ltd
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Priority claimed from KR1020130161414A external-priority patent/KR20150073566A/en
Application filed by Posco Co Ltd filed Critical Posco Co Ltd
Priority claimed from KR1020130163517A external-priority patent/KR101595492B1/en
Publication of CN105849549A publication Critical patent/CN105849549A/en
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Publication of CN105849549B publication Critical patent/CN105849549B/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04Analysing solids
    • G01N29/043Analysing solids in the interior, e.g. by shear waves
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01HMEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H3/00Measuring characteristics of vibrations by using a detector in a fluid
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22Details, e.g. general constructional or apparatus details
    • G01N29/28Details, e.g. general constructional or apparatus details providing acoustic coupling, e.g. water
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00Indexing codes associated with group G01N29/00
    • G01N2291/02Indexing codes associated with the analysed material
    • G01N2291/023Solids
    • G01N2291/0234Metals, e.g. steel
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00Indexing codes associated with group G01N29/00
    • G01N2291/04Wave modes and trajectories
    • G01N2291/044Internal reflections (echoes), e.g. on walls or defects
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00Indexing codes associated with group G01N29/00
    • G01N2291/26Scanned objects
    • G01N2291/263Surfaces
    • G01N2291/2632Surfaces flat

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Acoustics & Sound (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

Disclosed are an ultrasonic flaw detection apparatus for detecting a flaw of a steel plate and an ultrasonic flaw detection method using the same. The ultrasonic flaw detection apparatus comprises: a spray nozzle that is installed below a steel plate in transit and sprays a medium toward the steel plate to form a medium column; an ultrasonic probe that is installed in the interior of the spray nozzle and transmits/receives ultrasonic waves for detection of a flaw in the steel plate through the medium column; and a medium circulation unit that collects the medium falling from the medium column and circulates the same to the spray nozzle.

Description

The ultrasonic defect detection equipment of detection steel plate defect and method
Technical field
The present invention relates to the equipment of a kind of internal flaw for the steel plate manufactured by ultrasound examination And method.
Background technology
In slab factory, before product ships, use ultrasound examination at quality control procedure With the internal flaw in the steel plate manufactured by detection.Ultrasound examination is for by launching to steel plate Ultrasound wave also receives and analyzes the ultrasound wave reflected by steel plate determines in steel plate whether exist The method of defect such as including crack, intermediate materials, segregation.
According to ultrasound probe whether contact steel plate surface, ultrasound examination can be divided into contact Detection method and non-contact detection method.
In the case of contact measurement method, owing to the surface condition and shape that steel plate occurs causes Noise, so error detection usually occurs, and due to because of the friction between ultrasound probe and steel plate , there is degeneration and the longevity of the detection performance of ultrasound probe in the abrasion on the detection surface of the probe caused The shortening of life.
In order to overcome such restriction of contact measurement method, just considering multiple non-contact detection Method.In the case of non-contact detection method, need contact medium to be displaced through ultrasound wave and visit The ultrasonic energy of head vibration, and as representative medium, exist and there is fabulous ultrasonic emitting The water of efficiency.
Fig. 1 is exemplified with the leaching in the non-contact ultrasonic wave detecting method for detecting defect in steel plate Do not has formula ultrasonic detection method.
As it is shown in figure 1, steel plate (3) is immersed in water-filled groove (1), use immersion Ultrasound probe (2) performs ultrasound examination in steel plate (3) top.Accordingly, because whole steel Plate (3) face under water, even when ultrasound probe (2) is mobile, exists to maintain and launches Advantage with the constant efficiency receiving ultrasound wave.
But, submergence ultrasonic detection method is being applied in steel rolling mill to produce the process of slab In the case of, the steel plate (3) transported by roller (4) for submergence there is large-sized groove (1) It is required with being used for the vertically movable equipment (5) of vertically movable steel plate (3) in groove (1). For this reason, it may be necessary to for structurally alter steel rolling mill facility construct work on a large scale.
Fig. 2 is exemplified with for using the defect in non-contact ultrasonic wave detecting method detection steel plate Water jet method in method.
This water jet method is to eject water to steel plate to provide water route and to be sent out by this water route Penetrate and receive a kind of method of ultrasound wave.Owing to being not required to be placed in groove by whole steel plate, therefore with Immersion ultrasonic detection method is compared, and above-described water jet method has and is easier to provide with setting The advantage executed.
With reference to Fig. 2, water storage roller (6) is longitudinally mounted to ultrasound probe along steel plate (3) (2) front and back, supplies water to store spy by nozzle (7) and water supply pipe (8) Quantitative water, then performs ultrasound examination in steel plate (3) top.In the case, even When steel plate is moved, there is the rotation by water storage roller (6) and still may carry out ultrasound wave inspection The advantage surveyed.
But, even if in this case, owing to the front-end and back-end when steel plate (3) enter Water can not be stored, it is impossible to detect corresponding part during detection region.Additionally, work as steel plate Width change time, there is the problem that stored water drops from the two of steel plate marginal portions.
Summary of the invention
Technical problem
It is desirable to provide a kind of equipment for ultrasound examination and method, examine at this ultrasound wave At steel plate medium formed below (water) post in survey, and launch and receive ultrasound wave, thus stably Launch and receive ultrasound wave and reclaim and reuse medium.
Additional aspect will partly be illustrated in the description that follows, and partly becomes bright from description Aobvious, maybe can the practice of embodiment by being given be appreciated that.
Technical scheme
One aspect of the present invention provides a kind of ultrasonic detecting equipment, this ultrasonic detecting equipment Including: an injection nozzle, this injection nozzle is installed in below a just transported steel plate, And by forming a dielectric posts towards a kind of medium of this steel plate injection;One ultrasound probe, This ultrasound probe is installed in this injection nozzle, and is launched by this dielectric posts and receive ultrasonic Ripple is for the defect detected in this steel plate;With a medium circulation unit, this medium circulation unit Reclaim the medium dropped from this dielectric posts and by the medium circulation of recovery to this injection nozzle.
This medium circulation unit may include that a dielectric-slab, and this dielectric-slab is installed in this injection On one neighboring of nozzle and receive the medium dropped from this dielectric posts;One recovery tube, this time Closed tube is connected to this dielectric-slab and reclaims the medium in this dielectric-slab;With a supply pipe, it is used for Medium in this recovery tube is fed to this injection nozzle.
One filter for the medium that filtration is discharged from this dielectric-slab can be installed in this time At closed tube.
This ultrasonic detecting equipment can also include a jet pressure control unit, for by jet Pressure is fed to this injection nozzle and controls the jet pressure of this injection nozzle.
This jet pressure control unit can be installed between supply pipe and recovery tube, this supply pipe It is connected to this injection nozzle, and this recovery tube is connected to be installed on the neighboring of this injection nozzle Dielectric-slab.
This jet pressure control unit can be a circulating pump.
This jet pressure control unit may include that a dielectric chamber, is used for comprising from this dielectric posts The medium dropped and be recovered, and the medium comprised is fed to this injection nozzle again;With one Surface level adjuster, the table of the medium that this surface level adjuster is comprised in adjusting this dielectric chamber Face level, to control the jet pressure of this injection nozzle.
This surface level adjuster may include that a horizon sensor, and this horizon sensor senses The surface level of the medium comprised in this dielectric chamber;First pipe, for being fed to this Jie by medium Matter room;Second pipe, for discharging medium from this dielectric chamber;With a control unit, this control list Unit is connected to this first pipe and this second pipe, and the value sensed based on this horizon sensor is controlled Make the flow rate of medium in this first pipe and this second pipe so that the surface level of medium has Particular value.
This control unit may include that a Supply House, this Supply House be connected this first pipe and Between this second pipe and comprise medium;One transfer pump, this transfer pump is installed in this first pipe At in this second pipe;First control valve and the second control valve, described first control valve and Second control valve is respectively installed at this first pipe and this second pipe;With a controller, this control Device processed controls this first control valve and this second control valve based on the value that this horizon sensor senses.
This jet pressure control unit may include that a dielectric chamber, is used for comprising from this dielectric posts The medium dropped and be recovered, and the medium comprised is fed to this injection nozzle again;And one Individual room height arm control, this room height arm control adjusts the height of this dielectric chamber, to control this injection The jet pressure of nozzle.
This room height arm control may include that a drive part, and this drive part drives this medium Room is moved in a vertical direction;With a controller, this controller is controlled according to an input signal Make the operation of this drive part.
Multiple ultrasound probes can be arranged on the width of this steel plate, and this injection nozzle Can be configured to accommodate the linear transducer array formed by multiple ultrasound probes.Here, this spy Head array can have the length more than or equal to this steel plate width.
Another aspect provides a kind of ultrasonic detection method, this ultrasonic detection method Including: transport a steel plate;Will by means of the injection nozzle being arranged on below this steel plate Medium injects to this steel plate and forms a dielectric posts;It is arranged in this injection nozzle by running one Interior ultrasound probe is detected in this steel plate to be launched by this dielectric posts and to receive ultrasound wave Portion's defect;With reclaim the medium that drops from this dielectric posts and the medium of recovery be fed to this again Injection nozzle.
The height that this dielectric posts can be formed to have when medium is just shot up is more than this injection Distance between the jet orifice of nozzle and the lower surface of this steel plate so that the upper part of this dielectric posts To more preferably be closely attached to the lower surface of steel plate.
Beneficial effect
According to embodiment of the present invention, launched by the dielectric posts formed below at steel plate and receive Ultrasound wave, thus the most stably launch and receive ultrasound wave.
Additionally, due to medium circulation unit is arranged to reuse the medium dropped from dielectric posts, Prevent medium from dropping to ground, and ultrasound examination type media need not be supplied continuously.
Additionally, due to by adjusting the apparent height of medium in dielectric chamber or dielectric chamber can be adjusted Highly accurately controlling the jet pressure of injection nozzle, so preventing, dielectric posts occurring torrent And pulsation, thus form stable dielectric posts.
Furthermore, it is possible to the whole length of detection steel plate.When ultrasound probe is formed array configuration, The whole width of steel plate can be detected simultaneously.
Accompanying drawing explanation
Fig. 1 is the conceptual view exemplified with conventional immersion ultrasonic detection method;
Fig. 2 is the conceptual view exemplified with conventional water jet ultrasonic detection method;
Fig. 3 is the general of the ultrasonic detecting equipment of an exemplary according to the present invention Read view;
Fig. 4 is regarding of the method exemplified with the injection nozzle formation dielectric posts used shown in Fig. 3 Figure;
Fig. 5 is that the ultrasound examination exemplified with an exemplary according to the present invention is tied The chart of fruit;
Fig. 6 and Fig. 7 is the jet pressure exemplified with an exemplary according to the present invention The conceptual view of control unit;
Fig. 8 is the conceptual view of the configuration exemplified with the control unit shown in Fig. 6 and Fig. 7;
Fig. 9 and Figure 10 is the jet exemplified with another exemplary according to the present invention The conceptual view of pressure control unit;
Figure 11 is the ultrasonic detecting equipment of another exemplary according to the present invention Perspective view;With
Figure 12 is the plan view of the ultrasonic detecting equipment shown in Figure 11.
Detailed description of the invention
Hereinafter, an exemplary according to the present invention will be described in detail with reference to the attached drawings The equipment of ultrasound examination and method for detecting steel plate defect.
Fig. 3 is the general of the ultrasonic detecting equipment of an exemplary according to the present invention Read view.
With reference to Fig. 3, include injection nozzle according to the ultrasonic detecting equipment of embodiment of the present invention (110), ultrasound probe (120) and medium circulation unit (130).
Injection nozzle (110) is installed in the steel plate (3) transported by buanch unit such as roller (4) Lower section, and towards steel plate (3) injection medium (such as, water) to form dielectric posts (10) (such as, water column).Dielectric posts (10) can be formed on penetrating away from injection nozzle (110) At the height of discharge orifice tens of milliseconds (mm) so that the stable transmitting of ultrasound wave and reception are possible 's.
It is internal that ultrasound probe (120) is installed in injection nozzle (110), and passes through medium Post (10) is launched and receives the ultrasound wave for detecting steel plate (3) defect.Ultrasound probe (120) Supporting construction in injected nozzle (110) supports, and has a leaching by medium submergence Formula is not had to pop one's head in.Ultrasound probe (120) is connected to data processor, at this data processor Manage and calculate the ultrasonic signal received from steel plate (3) and by wired connectivity method or wireless Whether existing defects is analyzed in steel plate (3) in method of attachment.When employing wireless method of attachment, super Sonic probe (120) includes that built-in wireless communication module is to be wirelessly transmitted to ultrasonic signal Data processor.
Medium circulation unit (130) reclaims the medium dropped from dielectric posts (10) and allows to be situated between Matter cycles through injection nozzle (110).According to this embodiment, medium circulation unit (130) Including dielectric-slab (131), recovery tube (132) and supply pipe (133).
Dielectric-slab (131) is installed on the neighboring of injection nozzle (110) and is configured to Receive the medium dropped from dielectric posts (10).Dielectric-slab (131) can be formed to limit spray Penetrate cylindrical shape or the box-shaped of nozzle (110).
Recovery tube (132) is connected to dielectric-slab (131) and is configured to recovering medium plate (131) Interior medium.From dielectric posts, (10 flow to dielectric-slab, and (medium of 131 is supplied to recovery tube (132).
Can be mounted for filtering the filter (134) of the medium discharged from dielectric-slab (131) At recovery tube (132) place, and deimpurity medium is thus gone can be again fed to injection Nozzle (110).
Supply pipe (133) is for being fed to injection nozzle (110) by the medium in recovery tube (132) And it is connected with each in injection nozzle (110) and recovery tube (132).
Ultrasonic detecting equipment according to this embodiment can include jet pressure control unit (140), for jet pressure being fed to injection nozzle (110) and controlling injection nozzle (110) Jet pressure.Jet pressure control unit (140) can be installed in supply pipe (133) and Between recovery tube (132).Injection nozzle (110) is according to by jet pressure control unit (140) The pressure of supply penetrates medium with specified pressure, thus forms dielectric posts (10).Jet pressure control Unit processed (140) can be circulating pump, and can control injection spray by controlling this circulating pump The jet pressure of mouth (110).
Fig. 4 forms dielectric posts (10) exemplified with the injection nozzle (110) shown in use Fig. 3 The view of method.
Fig. 4 (a) exemplified with the shape of the dielectric posts (10) formed by injection nozzle (110), And Fig. 4 (b) is exemplified with the dielectric posts (10) formed by injection nozzle (110) and steel plate (3) The state of contact.
As shown in Figure 4, the height (h) of dielectric posts (10) can be formed to be larger than spray Penetrate the distance (D) between the jet orifice of nozzle (110) and the lower surface of steel plate (3).As above Described by literary composition, sprayed more than injection by the height (h) being formed as dielectric posts (10) having Distance (D) between jet orifice and the lower surface of steel plate (3) of mouth (10), dielectric posts (10) Steel plate (3) can be closely attached to, thus formed and be used for stably launching and receiving ultrasonic The dielectric posts (10) of ripple.
Hereinafter, the ultrasound wave using the ultrasonic detecting equipment according to this embodiment will be described Detection method.
First, by buanch unit (in other words, roller 4) transport steel plate (3), steel plate (3) It is by the object of examined existing defects.Then, by means of being arranged on steel plate (3) lower section Injection nozzle (110) medium injected to steel plate (3) form dielectric posts (10).
It follows that run the ultrasound probe (120) being arranged on injection nozzle (110) with logical Cross dielectric posts launch and receive ultrasound wave, thus detect the internal flaw of steel plate (3).At data Reason device processes the ultrasonic signal launched from ultrasound probe (120) and derives end value.
Fig. 5 is exemplified with the result processing the ultrasonic signal relevant to foregoing teachings.Fig. 5 (a) Result exemplified with the ultrasonic signal processing the steel plate without internal flaw.Fig. 5 (b) example Show the result of the ultrasonic signal processing the steel plate with internal flaw.
The medium forming dielectric posts drops due to the weight of himself, on the medium that drops uses and has The medium circulation unit (130) of the configuration described by literary composition is recovered, and the medium that will fall off is again Secondary it is fed to injection nozzle (110).Accordingly it is possible to prevent medium drops to ground, and Need not be continuously from outside supplying media during one ultrasound examination process.
Simultaneously, it is possible to use circulating pump is as jet pressure control unit as described above (140).But, compared with the method controlled by control circulating pump, will be with reference to Fig. 6 to figure 10 jet pressures describing the jet pressure that can accurately control injection nozzle (110) control single The configuration of unit (140).
Fig. 6 and Fig. 7 is the jet pressure exemplified with an exemplary according to the present invention The conceptual view of control unit.Fig. 6 is exemplified with not yet passing injection nozzle (110) injection medium Original state, and Fig. 7 is exemplified with passing through injection nozzle (110) injection medium and Form the state of dielectric posts (10).
Jet pressure control unit (140) according to this embodiment includes a dielectric chamber (150) With a surface level adjuster (160).
Dielectric chamber (150) comprises the medium dropping from dielectric posts (10) and being recovered, and will bag Injection nozzle (110) again it is fed to containing medium therein.Dielectric chamber (150) can be connected Each in recovery tube (132) and supply pipe (133) is so that medium circulation.In other words, it is situated between Matter room (150) is connected to injection nozzle (110) by supply pipe (133), and passes through back Closed tube (132) is connected to dielectric-slab (131).According to structure as described above, at medium The medium at plate (131) place is through recovery tube (132) and is supplied to dielectric chamber (150), And the medium in dielectric chamber (150) through supply pipe (133) and is supplied to injection nozzle (110)。
Surface level adjuster (160) comprises in being configured to adjust dielectric chamber (150) Surface level (a) of medium controls the jet pressure of injection nozzle (110).
According to this embodiment, surface level adjuster (160) include horizon sensor (161), First pipe and the second pipe (162,163) and control unit (164).
Horizon sensor (161) is installed in dielectric chamber (150) and sensed media room (150) The surface level of the medium inside comprised.
First pipe and the second pipe (162,163) each be connected to dielectric chamber (150). First pipe (162) for being fed to dielectric chamber (150) by medium, and the second pipe (163) is used In medium is discharged from dielectric chamber (150).
Control unit (164) is connected to the first pipe and the second pipe (162,163), and base The first pipe and the second pipe (162,163) is controlled in the value sensed by horizon sensor (161) The flow rate of interior medium, to allow surface level (a) of medium to have particular value.Here, Value based on user input sets this particular value.
Hereinafter, the jet pressure control unit (140) according to this embodiment will be described Running status.
According to configuration as described above, the height of the media end of (110) from ground to injection nozzle Degree (H) is always consistent with the length (L) of (150) interior dielectric surface from ground to dielectric chamber. When surface level (a) of the medium in dielectric chamber (150) changes, injection nozzle (110) The height (H) of media end be also changed.
As shown in Figure 7, Jie in ground (or installing surface) to dielectric chamber (150) The length (L) on matter surface becomes to be above from ground (or installing surface) to injection nozzle (110) The height of jet orifice, medium is shot up initially forming dielectric posts (10) from injection nozzle (110), In other words, water column.
Control unit (164) can by user input setting value with pass through horizon sensor (161) value sensed compares, and can adjust the medium supply to dielectric chamber (150) With the medium discharge from dielectric chamber (150), thus control the surface of dielectric chamber (150) interior medium Level (a).Therefore, adjust the height of dielectric posts, thus control jet pressure.
Fig. 8 is the conceptual view of the configuration exemplified with the control unit shown in Fig. 6 and Fig. 7.
According to this embodiment, control unit (164) include Supply House (171), transfer pump (172), First control valve and the second control valve (173,174) and controller (175).
Supply House (171) is connected between the first pipe (162) and the second pipe (163), and And comprise medium that is that reclaim or that be supplied to dielectric chamber (150) from dielectric chamber (150).
Transfer pump (172) is installed in the first pipe (162) or second pipe (163) place, and Transport capacity for conveying medium is provided.In this embodiment, it is shown that transfer pump (172) It is installed in the first pipe (162) place.
First control valve and the second control valve (173,174) are respectively installed in the first pipe and second Pipe (162,163) place, to control the first pipe and the opening and closing of the second pipe (162,163) And open speed.According to the first control valve and the operation of the second control valve (173,174), adjust The flow rate of the medium of whole first pipe and the second pipe (162,163).
Controller (175) is connected to horizon sensor (161), and passes based on by level Value and the setting value of user that sensor (161) senses control the first control valve and second and control The operation of valve (173,174).
The configuration of above-described control unit (164) is only a reality of multiple embodiments Execute example, and can be configured of can be based on being sensed by horizon sensor (161) Value controls any form of the configuration on surface level (a) of the medium in dielectric chamber (150).
Fig. 9 and Figure 10 is the jet exemplified with another exemplary according to the present invention The conceptual view of pressure control unit.Fig. 9 is exemplified with not yet passing injection nozzle (110) injection The original state of medium, and Figure 10 is exemplified with passing through injection nozzle (110) injection medium and Through forming the state of dielectric posts (10).
Jet pressure control unit (140 ') according to this embodiment includes dielectric chamber (150) With room height arm control (180).
Owing to dielectric chamber (150) has the configuration identical with previous example, therefore it is retouched State and will be omitted.
But, in this embodiment, dielectric chamber (150) is configured to vertically movable.Guide The vertically movable guiding structural of dielectric chamber (150) can be arranged on dielectric chamber (150) and support Between structure.Additionally, in order to allow dielectric chamber (150) vertically movable, supply pipe (133) and Recovery tube (132) can have flexible material and maybe can be configured to relative to dielectric chamber (150) Relative movement.
Room height arm control (180) is configured to the height (C) of dielectric chamber (150) to be come Control the jet pressure of injection nozzle (110).
According to this embodiment, room height arm control (180) includes drive part (181) and control Device processed (182).
Drive part (181) is for driving dielectric chamber (150) and permissible in a vertical direction Being formed by multiple parts, described parts include linear motor, ball screw, tooth bar and little gear Deng.
Controller (182) is configured to control the fortune of drive part (181) according to input signal OK.For example, it is possible to value based on user input controls the operation of drive part (181), So that dielectric chamber (150) is positioned in the position that user sets.
When describing according to the running status of jet pressure control unit (140 ') of this embodiment, Between injection nozzle (110) and dielectric chamber (150), only there is the circulation of medium, and do not occur Medium to the input in blood circulation or medium from the output of blood circulation.Therefore, dielectric chamber is worked as (150), when height changes, the surface level of dielectric chamber (150) interior medium changes Become, and only the height (H) of the media end of (110) is changed from ground to injection nozzle.
In this embodiment, use as described above, when the position quilt of dielectric chamber (150) It is mobile extremely when the certain height of the state shown in the original state shown in Fig. 9 to Figure 10, Medium is shot up by injection nozzle (110) and is formed dielectric posts (10).Due to controller (182) dielectric chamber (150) can be adjusted by controlling the operation of drive part (181) Highly, the height of dielectric chamber (10) is adjusted so that and makes control expulsion pressure be possibly realized.
Figure 11 is the ultrasonic detecting equipment of another exemplary according to the present invention Perspective view.Figure 12 is the plan view of the ultrasonic detecting equipment shown in Figure 11.
Such as previous embodiment, include injection according to the ultrasonic detecting equipment of this embodiment Nozzle (210), ultrasound probe (220), medium circulation unit (230), jet supply Unit (240) etc..
In Figure 11 and Figure 12, reference number indicates the aforementioned of appointment similar with foregoing embodiments The element that the element of embodiment is corresponding.In other words, with shown in 100s in foregoing embodiments Reference number is changed to 200s.
According to this embodiment, multiple ultrasound probes (220) are arranged at the width of steel plate (3) Spend direction and form linear transducer array (225).Here, linear transducer array (225) can have length Degree (L), this length (L) is more than or equal to the width (W) of steel plate (3).
Injection nozzle (210) is formed to accommodate linear transducer array (225).In this embodiment, Illustrate that injection nozzle (210) has the width of steel plate (3) as four limits of longitudinal direction Shape cross section.Additionally, illustrate that dielectric-slab (231) also has tetragon box shape, this tetragon Box shape limits the neighboring of injection nozzle (210).But, according to the injection spray of this embodiment The shape of mouth (210) and the shape of dielectric-slab (231) are not limited to above-mentioned and may be modified as many Plant shape.
According to this embodiment, due to the multiple probes arranged on the width of steel plate (3) (220) covering the whole width of steel plate (3), existing can be while transport steel plate (3) The advantage of the whole width of detection steel plate (3).
The ultrasonic detecting equipment of above-described detection steel plate defect and method are not limited to retouch above The arrangements and methods stated.All embodiments or some embodiments can by optionally combination and Configuration is to perform multiple remodeling.Additionally, in the technical scope of the present invention, those skilled in the art Much remodeling can be realized.

Claims (15)

1. a ultrasonic detecting equipment, including:
One injection nozzle, this injection nozzle is installed in below a just transported steel plate and leads to Cross and form a dielectric posts towards a kind of medium of this steel plate injection;
One ultrasound probe, this ultrasound probe is installed in this injection nozzle, and passes through This dielectric posts is launched and receives ultrasound wave for the defect detected in this steel plate;And
One medium circulation unit, this medium circulation unit reclaims the medium dropped from this dielectric posts also And by the medium circulation that reclaimed to this injection nozzle.
Ultrasonic detecting equipment the most according to claim 1, wherein this medium circulation unit Including:
One dielectric-slab, this dielectric-slab is installed on a neighboring of this injection nozzle and connects Receive the medium dropped from this dielectric posts;
One recovery tube, this recovery tube is connected to this dielectric-slab and reclaims Jie in this dielectric-slab Matter;And
One supply pipe, for being fed to this injection nozzle by the medium in this recovery tube.
Ultrasonic detecting equipment the most according to claim 2, one of them for filter from The filter of the medium that this dielectric-slab is discharged is installed at this recovery tube.
Ultrasonic detecting equipment the most according to claim 1, also includes a jet pressure Control unit, this jet pressure control unit for jet pressure is fed to this injection nozzle and Control the jet pressure of this injection nozzle.
Ultrasonic detecting equipment the most according to claim 4, wherein this jet pressure controls Unit is installed between supply pipe and recovery tube, and this supply pipe is connected to this injection nozzle, and should Recovery tube is connected to the dielectric-slab being arranged on the neighboring of this injection nozzle.
Ultrasonic detecting equipment the most according to claim 4, wherein this jet pressure controls Unit is a circulating pump.
Ultrasonic detecting equipment the most according to claim 4, wherein this jet pressure controls Unit includes:
One dielectric chamber, for comprising the medium dropping from this dielectric posts and being recovered, and will The medium comprised is fed to this injection nozzle again;And
One surface level adjuster, Jie that this surface level adjuster comprises in adjusting this dielectric chamber The surface level of matter, to control the jet pressure of this injection nozzle.
Ultrasonic detecting equipment the most according to claim 7, wherein this surface horizontal adjustment Device includes:
One horizon sensor, the surface of the medium that this horizon sensor comprises in sensing this dielectric chamber Level;
First pipe, for being fed to this dielectric chamber by medium;
Second pipe, for discharging medium from this dielectric chamber;And
One control unit, this control unit is connected to this first pipe and this second pipe, and base Medium in the value sensed by this horizon sensor controls this first pipe and this second pipe Flow rate so that the surface level of medium has particular value.
Ultrasonic detecting equipment the most according to claim 8, wherein this control unit includes:
One Supply House, this Supply House is connected between this first pipe and this second pipe and comprises Medium;
One transfer pump, this transfer pump is installed at one in this first pipe and this second pipe;
First control valve and the second control valve, described first control valve and the second control valve are pacified respectively It is contained at this first pipe and at this second pipe;And
One controller, this controller controls this first control based on the value that this horizon sensor senses Valve processed and this second control valve.
Ultrasonic detecting equipment the most according to claim 4, wherein this jet pressure controls Unit includes:
One dielectric chamber, for comprising the medium dropping from this dielectric posts and being recovered, and will The medium comprised is fed to this injection nozzle again;And
One room height arm control, this room height arm control adjusts the height of this dielectric chamber to control to be somebody's turn to do The jet pressure of injection nozzle.
11. ultrasonic detecting equipments according to claim 10, wherein this room height adjustment Device includes:
One drive part, this drive part drives this dielectric chamber to move in a vertical direction;And
One controller, this controller controls the fortune of this drive part according to an input signal OK.
12. ultrasonic detecting equipments according to claim 1, plurality of such ultrasonic Ripple probe is arranged on the width of this steel plate, and
Wherein this injection nozzle is configured to accommodate the probe formed by multiple ultrasound probes Array.
13. ultrasonic detecting equipments according to claim 12, wherein this linear transducer array tool Some length is more than or equal to the width of this steel plate.
14. 1 kinds of ultrasonic detection methods, including:
Transport a steel plate;
By means of the injection nozzle being arranged on below this steel plate, medium is injected to this steel plate Form a dielectric posts;
By running a ultrasound probe being arranged in this injection nozzle with by this dielectric posts Launch and receive ultrasound wave and detect the internal flaw of this steel plate;And
Reclaim the medium dropped from this dielectric posts and the medium reclaimed is fed to this spray again Penetrate nozzle.
15. methods according to claim 14, wherein this dielectric posts is formed just penetrating The height having when going out medium is more than between jet orifice and the lower surface of this steel plate of this injection nozzle Distance.
CN201380081826.9A 2013-12-23 2013-12-26 Detect the ultrasonic detecting equipment and method of steel plate defect Expired - Fee Related CN105849549B (en)

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PCT/KR2013/012207 WO2015099229A1 (en) 2013-12-23 2013-12-26 Ultrasonic flaw detection apparatus and method for detecting flaw of steel plate
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